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北京中青世纪科技发展公司最近开发出3～8分钟语音录放板新产品。该录放板采用美国ISD公司新器件ISD33000及lSD4003系列,采用单片机进行控制,并有稳压电源、功放、话筒及数码管显示(显示分段数及工作状态)。 ISD系列语时芯片完全改变了早期语音录放芯片的缺陷,它采用模拟语音直接存储的专利技术,消除了原有量化噪音和调制失真,使录放音音质良好,达到甚至超过磁带录放效果。与此同时它
Beijing Zhongqing Century Science and Technology Development Company recently developed 3 to 8 minutes of voice recording board new products. The recording and reproducing board adopts the new ISD33000 and lSD4003 series of ISD Corporation of the United States, and is controlled by a single chip microcomputer. The power supply, amplifier, microphone and digital tube display (showing the number of segments and working status) are provided. ISD series of speech chip completely changed the early voice recording chip defects, it uses analog voice storage directly patented technology, eliminating the original quantization noise and modulation distortion, so that recording and playback sound quality good, or even exceed tape recording and playback. At the same time it